The 9EX21801 provides 18 output clocks for PCIe Gen2 (100MHz) or QPI (133MHz) applications. The 9EX21801 has 4 selectable SMBus addresses, and dedicated CKPWRGD/PD# and VDDA pins for easy board design. A differential CPU clock from a CK410B+ main clock generator, such as the 932S421, drives the 9EX21801. In fanout mode, the 9EX21801 provides outputs up to 400MHz.

Features

  • DIF output cycle-to-cycle jitter < 50ps
  • DIF output-to-output skew < 150 ps
  • PCIe Gen2 compliant phase noise
  • QPI 133MHz compliant phase noise
  • Supports output clock frequencies up to 400 MHz
  • 4 Selectable SMBus addresses
  • SMBus address is independent of PLL operating mode
  • Dedicated CKPWRGD/PD# and VDDA pins ease board design
  • Available in industrial temperature range (-40°C to +85°C)

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
9EX21801AKILF Obsolete NLG72P1 VFQFPN 72 I Yes Tray
Availability
9EX21801AKILFT Obsolete NLG72P1 VFQFPN 72 I Yes Reel
Availability
9EX21801AKLF Obsolete NLG72P1 VFQFPN 72 C Yes Tray
Availability
9EX21801AKLFT Obsolete NLG72P1 VFQFPN 72 C Yes Reel
Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
9EX21801A Datasheet Datasheet PDF 149 KB
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB
AN-843 PCI Express Reference Clock Requirements Application Note PDF 1.81 MB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB
AN-815 Understanding Jitter Units Application Note PDF 476 KB
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB
PCNs & PDNs
PDN# : CQ-17-04(R1) Product Discontinuance Notice Product Discontinuation Notice PDF 606 KB
PDN# : CQ-17-04 Product Discontinuance Notice Product Discontinuation Notice PDF 599 KB
PCN# : A1611-02 Add JCET China as Alternate Assembly and Change of Material Set at Alternate Assembly Location Product Change Notice PDF 583 KB
PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB
PCN# : A1311-03R1 Alternate Assembly Locations Product Change Notice PDF 43 KB
PCN# : A1311-03 Alternate Assembly Locations Product Change Notice PDF 140 KB
PCN# : A1308-01 Add ASEK as Alternate Assembly for VFQFPN-72 Product Change Notice PDF 103 KB
PCN# : A1305-01 Gold Wire to Copper Wire Product Change Notice PDF 148 KB
PCN# : K1002-01 UPDATED DATASHEET TO CORRECT PIN62 DESCRIPTION Product Change Notice PDF 55 KB
Other
Timing Solutions Products Overview Overview PDF 4.11 MB
PCI Express® Timing Solutions Overview Overview PDF 301 KB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB

Software & Tools

Title Other Languages Type Format File Size Date
9EX21801AKLF IBIS Model Model - IBIS ZIP 9 KB